--- title: gate valve dimension date: 2026-06-23T05:51:34Z modified: 2026-06-23T05:53:19Z permalink: "https://www.xintaivalves.com/gate-valve-dimension/" type: page status: publish excerpt: "" wpid: 15122 timestamp: 2026-06-23T05:53:19Z tags: [] --- Gate Valve Dimensions Chart | API 600 ASME B16.10 B16.5 Standards | Xintai Valves # Gate Valve Dimensions Chart Select the right gate valve faster. This reference covers Class 150 / 300 / 600 / 900 ratings with full dimensional data — face-to-face length, flange OD, bolt patterns, and weight — so your engineering team can spec and quote without guesswork. [Browse Products](https://www.xintaivalves.com/wp-content/uploads/wp-mfa-exports/taxonomy/product/gate-valve.md#pmain) [Contact Us](https://www.xintaivalves.com/wp-content/uploads/wp-mfa-exports/page/contact.md) [About Company](https://www.xintaivalves.com/wp-content/uploads/wp-mfa-exports/page/company-profile.md) Pressure Class Comparison ## Gate Valve Pressure Classes at a Glance Different pressure classes of gate valves vary significantly in dimensions, weight, and materials. The table below shows the key characteristics of Class 150, 300, 600, and 900. #### Class 150 PN 10-25 - Lightweight Design - Minimal Wall Thickness - Cost Effective - DN 15-600 (½”-24″) - Manual Handwheel - Standard Configuration #### Class 300 PN 40-50 - Medium Pressure Rated - Thicker Walls - Versatile Application - DN 15-600 (½”-24″) - Manual/Gear Drive - Larger Flanges #### Class 600 PN 100-110 - Heavy Duty Design - Reinforced Walls - High Pressure Rated - DN 15-600 (½”-24″) - Gear Operated - Oversized Flanges #### Class 900 PN 150-160 - Ultra High Pressure - Maximum Reinforcement - Extreme Applications - DN 50-400 (2″-16″) - Gear Operated - Specialty Configuration Class 150 | PN 10-25 ## Class 150 Gate Valve Dimension Specifications Class 150 is the lightweight gate valve for low-pressure applications. Design pressure range PN 10-25, with face-to-face length per ASME B16.10 and flange dimensions per ASME B16.5. ![Class 150 Dimension Drawing](https://www.xintaivalves.com/wp-content/uploads/2026/06/class-150.webp) ### Class 150 Features **Design Range:** PN 10 / PN 16 / PN 25 (Class 150) **Pipe Size Range:** ½” to 40″ (DN 15 to DN 1000) **Actuation:** Manual handwheel (small sizes) or gear drive (large sizes) - **Flange Standard** ASME B16.5 Rf (Raised Face) - **Connection Types** Flanged, welded, threaded ends available - **Material Options** Cast Steel, Stainless Steel 304/316L, Cast Iron - **Gate Type** Wedge gate or parallel gate available - **Operating Temp Range** -29°C to +200°C (standard) - **Face-to-Face Length** Per ASME B16.10 (see table below) ### Class 150 Dimension Table (Unit: mm) | NPS/DN | L | D | D1 | D2 | b-f | Z-Φd | H | D0 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | **1/2″** | 108 | 90 | 60.3 | 34.9 | 8-2 | 4-16 | 188 | 120 | | 3/4″ | 117 | 100 | 69.9 | 42.9 | 8.9-2 | 4-16 | 202 | 120 | | 1″ | 127 | 110 | 79.4 | 50.8 | 9.6-2 | 4-16 | 225 | 140 | | 1¼” | 140 | 115 | 88.9 | 63.5 | 11.2-2 | 4-16 | 252 | 160 | | 1½” | 165 | 125 | 98.4 | 73 | 12.7-2 | 4-16 | 277 | 180 | | 2″ | 178 | 150 | 120.7 | 92.1 | 14.3-2 | 4-19 | 310 | 200 | | 2½” | 190 | 180 | 139.7 | 104.8 | 15.9-2 | 4-19 | 380 | 220 | | 3″ | 203 | 190 | 152.4 | 127 | 17.5-2 | 4-19 | 412 | 240 | | 4″ | 229 | 230 | 190.5 | 157.2 | 22.3-2 | 8-19 | 471 | 280 | | 5″ | 254 | 255 | 215.9 | 185.7 | 22.3-2 | 8-22 | 516 | 300 | | 6″ | 267 | 280 | 241.3 | 215.9 | 23.9-2 | 8-22 | 588 | 300 | | 8″ | 292 | 345 | 298.5 | 269.9 | 27-2 | 8-22 | 741 | 350 | | 10″ | 330 | 405 | 362 | 323.8 | 28.6-2 | 12-25 | 903 | 400 | | 12″ | 356 | 485 | 431.8 | 381 | 30.2-2 | 12-25 | 1054 | 500 | | 14″ | 381 | 535 | 476.3 | 412.8 | 33.4-2 | 12-29 | 1295 | 600 | | 16″ | 406 | 595 | 539.8 | 469.9 | 35-2 | 16-29 | 1435 | 600 | | 18″ | 432 | 635 | 577.9 | 533.4 | 38.1-2 | 16-32 | 1626 | 650 | | 20″ | 457 | 700 | 635 | 584.2 | 41.3-2 | 20-32 | 1859 | 650 | | 24″ | 508 | 815 | 749.5 | 692.2 | 46.1-2 | 20-35 | 2175 | 700 | | 26″ | 559 | 870 | 806.4 | 749 | 66.7-2 | 24-35 | 2387 | / | | 28″ | 610 | 925 | 863.6 | 800 | 69.9-2 | 28-35 | 2590 | / | | 30″ | 610 | 985 | 914.4 | 857 | 73.1-2 | 28-35 | 2819 | / | | 32″ | 711 | 1060 | 977.9 | 914 | 79.4-2 | 28-41 | 2870 | / | | 36″ | 711 | 1170 | 1085.8 | 1022 | 88.9-2 | 32-41 | 2997 | / | | 40″ | 1067 | 1290 | 1200.2 | 1124 | 88.9-2 | 36-41 | 3302 | / | **Legend:** L = Face-to-Face Length | D = Flange O.D. | D1 = Bolt Circle Diameter | D2 = Sealing Surface Diameter | H = Overall Height | D0 = Handwheel Diameter Class 300 | PN 40-50 ## Class 300 Gate Valve Dimension Specifications Class 300 is a medium pressure gate valve with a more robust structure than Class 150. Design pressure range PN 40-50, widely used in oil, chemical, and energy sector applications. ![Class 300 Dimension Drawing](https://www.xintaivalves.com/wp-content/uploads/2026/06/class-300.webp) ### Class 300 Features **Design Range:** PN 40 / PN 50 (Class 300) **Pipe Size Range:** ½” to 28″ (DN 15 to DN 700) **Actuation:** Manual handwheel (small) or gear drive (medium sizes) - **Flange Standard** ASME B16.5 Rf (Raised Face) - **Flange Upgrade** Larger flange diameter & thickness vs Class 150 - **Wall Thickness** Thicker valve body for higher pressure - **Material Options** Cast Steel A216 WCB, Stainless, Cast Iron - **Operating Temp Range** -29°C to +250°C (standard) - **Application** Oil & gas, chemical, power, metallurgical medium-pressure systems ### Class 300 Dimension Table (Unit: mm) | NPS/DN | L | D | D1 | D2 | b-f | Z-Φd | H | D0 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | **1/2″** | 140 | 95 | 66.7 | 34.9 | 12.7-2 | 4-16 | 188 | 120 | | 3/4″ | 152 | 115 | 82.6 | 42.9 | 14.3-2 | 4-19 | 202 | 120 | | 1″ | 165 | 125 | 88.9 | 50.8 | 15.9-2 | 4-19 | 225 | 140 | | 1¼” | 178 | 135 | 98.4 | 63.5 | 17.5-2 | 4-19 | 252 | 160 | | 1½” | 190 | 155 | 114.3 | 73 | 19.1-2 | 4-22 | 277 | 180 | | 2″ | 216 | 165 | 127 | 92.1 | 20.7-2 | 8-19 | 353 | 250 | | 2½” | 241 | 190 | 149.2 | 104.8 | 23.9-2 | 8-22.5 | 377 | 250 | | 3″ | 282 | 210 | 168.3 | 127 | 27-2 | 8-22.5 | 397 | 300 | | 4″ | 305 | 255 | 200 | 157.2 | 30.2-2 | 8-22.5 | 482 | 300 | | 5″ | 381 | 280 | 235 | 185.7 | 33.4-2 | 8-22.5 | 568 | 350 | | 6″ | 403 | 320 | 269.9 | 215.9 | 35-2 | 12-22.5 | 625 | 350 | | 8″ | 419 | 380 | 330.2 | 269.9 | 39.7-2 | 12-25.5 | 776 | 400 | | 10″ | 457 | 445 | 387.4 | 323.8 | 46.1-2 | 16-29 | 958 | 500 | | 12″ | 502 | 520 | 450.8 | 381 | 49.3-2 | 16-32 | 1135 | 600 | | 14″ | 762 | 585 | 514.4 | 412.8 | 52.4-2 | 20-32 | 1205 | 600 | | 16″ | 838 | 650 | 571.5 | 469.9 | 55.6-2 | 20-35 | 1367 | 650 | | 18″ | 914 | 710 | 628.6 | 533.4 | 58.8-2 | 24-35 | 2077 | / | | 20″ | 991 | 775 | 685.8 | 584.2 | 62-2 | 24-35 | 2310 | / | | 24″ | 1143 | 915 | 812.8 | 692.2 | 68.3-2 | 24-41 | 2810 | / | | 26″ | 1245 | 970 | 876.3 | 749 | 77.8-2 | 28-45 | 3105 | / | | 28″ | 1346 | 1035 | 939.8 | 800 | 84.2-2 | 28-45 | 3300 | / | **Note:** Class 300 has larger flange dimensions and wall thickness than Class 150. All dimensions in millimeters (mm). Class 600 / 900 | PN 100 / PN 150 ## Class 600 / Class 900 Gate Valve Dimension Specifications Class 600 and Class 900 are heavy-duty high-pressure gate valves designed for demanding applications. Featuring thickened valve bodies, oversized flanges, and heavy-duty gear actuation, suitable for high-pressure oil & gas and chemical systems. ![Class 600 Dimension Drawing](https://www.xintaivalves.com/wp-content/uploads/2026/06/class-600900.webp) ### Class 600 / 900 Features **Design Range:** PN 100 / PN 110 / PN 150 / PN 160 (Class 600 / Class 900) **Pipe Size Range:** ½” to 24″ (DN 15 to DN 600) **Actuation:** Heavy-duty gear drive (mandatory for most sizes) - **Flange Standard** ASME B16.5 RF / RTJ (Ring Type Joint) - **Wall Thickness** Ultra-thick valve body for extreme pressure - **Material Options** Cast Steel A216 WCB, A352 LCC, Alloy Steel - **Gate Type** Flexible wedge or solid wedge - **Operating Temp Range** -29°C to +425°C (standard) - **Application** High-pressure oil & gas, chemical, power generation 600 ##### Class 600 **Pressure Rating:** PN 100-110 **Application:** High-pressure oil & gas, chemical **Actuation:** Gear drive 900 ##### Class 900 **Pressure Rating:** PN 150-160 **Application:** Ultra high-pressure systems **Actuation:** Gear drive ⚙ ##### Common Features **Pipe Size:** DN 15-600 (½”-24″) **Gate Type:** Wedge / Parallel optional **Material:** Cast Steel A216 WCB / A352 LCC ### Class 600 Dimension Table (Unit: mm) | NPS/DN | L | D | D1 | D2 | b-f | Z-Φd | H | D0 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | **1/2″** | 165 | 95 | 66.7 | 34.9 | 14.3-7 | 4-16 | 195 | 200 | | 3/4″ | 190 | 115 | 82.6 | 42.9 | 15.9-7 | 4-19 | 210 | 240 | | 1″ | 216 | 125 | 88.9 | 50.8 | 17.5-7 | 4-19 | 238 | 240 | | 1¼” | 229 | 135 | 98.4 | 63.5 | 20.7-7 | 4-19 | 278 | 300 | | 1½” | 241 | 155 | 114.3 | 73 | 22.3-7 | 4-22 | 312 | 300 | | 2″ | 292 | 165 | 127 | 92.1 | 25.4-7 | 8-19 | 379 | 350 | | 2½” | 330 | 190 | 149.2 | 104.8 | 28.6-7 | 8-22.5 | 420 | 400 | | 3″ | 356 | 210 | 168.3 | 127 | 31.8-7 | 8-22.5 | 461 | 450 | | 4″ | 432 | 275 | 215.9 | 157.2 | 38.1-7 | 8-25.5 | 545 | 500 | | 5″ | 508 | 330 | 266.7 | 185.7 | 44.5-7 | 8-29 | 630 | 600 | | 6″ | 559 | 355 | 292.1 | 215.9 | 47.7-7 | 12-29 | 745 | 700 | | 8″ | 660 | 420 | 349.2 | 269.9 | 55.6-7 | 12-32 | 881 | 700 | | 10″ | 787 | 510 | 431.8 | 323.8 | 63.5-7 | 16-35 | 1062 | 800 | | 12″ | 838 | 560 | 489 | 381 | 66.7-7 | 20-35 | 1194 | / | | 14″ | 889 | 605 | 527 | 412.8 | 69.9-7 | 20-38 | 1630 | / | | 16″ | 991 | 685 | 603.2 | 469.9 | 76.2-7 | 20-41 | 2032 | / | | 18″ | 1092 | 745 | 654 | 533.4 | 82.6-7 | 20-44.5 | 2186 | / | | 20″ | 1194 | 815 | 723.9 | 584.2 | 88.9-7 | 24-44.5 | 2420 | / | | 24″ | 1397 | 940 | 838.2 | 692.2 | 101.6-7 | 24-51 | 2845 | / | ### Class 900 Dimension Table (Unit: mm) | NPS/DN | L | D | D1 | D2 | b-f | Z-Φd | H | D0 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | **2″** | 368 | 215 | 165.1 | 92.1 | 38.1-7 | 8-25 | 465 | 300 | | 2½” | 419 | 245 | 190.5 | 104.8 | 41.3-7 | 8-29 | 525 | 400 | | 3″ | 381 | 240 | 190.5 | 127 | 38.1-7 | 8-25 | 625 | 500 | | 4″ | 457 | 290 | 235 | 157.2 | 44.5-7 | 8-32 | 855 | 550 | | 5″ | 559 | 350 | 279.4 | 185.7 | 50.8-7 | 8-35 | 960 | 600 | | 6″ | 610 | 380 | 317.5 | 215.9 | 55.6-7 | 12-32 | 1195 | 700 | | 8″ | 737 | 470 | 393.7 | 269.9 | 63.5-7 | 12-38 | 1220 | / | | 10″ | 838 | 545 | 469.9 | 323.8 | 69.9-7 | 16-38 | 1440 | / | | 12″ | 965 | 610 | 533.4 | 381 | 79.4-7 | 20-38 | 1622 | / | | 14″ | 1029 | 640 | 558.8 | 412.8 | 85.8-7 | 20-41 | 1790 | / | | 16″ | 1130 | 705 | 616 | 469.9 | 88.9-7 | 20-44 | 1915 | / | **Note:** Class 600 and Class 900 feature ultra-heavy-duty design. Flange dimensions, wall thickness, and weight far exceed Class 150/300. Gear drive operation strongly recommended for all sizes. Product Display ## Gate Valve Product Photography The following images showcase actual gate valves across different pressure classes and actuation types. You can observe the clear differences in valve body size, flange dimensions, and drive mechanisms. ![Class 150 Gate Valve](https://www.xintaivalves.com/wp-content/uploads/2026/06/gate-valve-class-150.webp) Class 150 – Manual Handwheel ![Class 300 Gate Valve](https://www.xintaivalves.com/wp-content/uploads/2026/06/gate-valve-class-300.webp) Class 300 – Gear Operated ![Class 600 Gate Valve](https://www.xintaivalves.com/wp-content/uploads/2026/06/gate-valve-class-600.webp) Class 600 – Heavy Duty Gear Drive [View All Gate Valves](https://www.xintaivalves.com/wp-content/uploads/wp-mfa-exports/taxonomy/product/gate-valve.md#pmain) [Why Choose Us](https://www.xintaivalves.com/wp-content/uploads/wp-mfa-exports/page/advantages.md) Engineering Reference ## Gate Valve Dimension Drawing Label Guide Gate valve dimension drawings use standardized symbols and labels. Understanding these labels enables engineers to quickly interpret technical drawings, CAD files, and manufacturer datasheets. L ##### Face-to-Face / End-to-End Length Distance between flange faces or end-to-end dimension for butt-weld valves. Defined per ASME B16.10. D ##### Flange Outside Diameter Overall diameter of the flanged end. Must match the mating flange per ASME B16.5. D1 ##### Bolt Circle Diameter Diameter of the circle connecting bolt hole centers on the flange face. Critical for bolt pattern alignment. D2 ##### Sealing Surface Diameter Effective sealing surface diameter where the gasket makes contact. Critical to seal integrity. H ##### Overall Height Height from pipe centerline to the top of handwheel or actuator stem. Essential for space planning. D0 ##### Handwheel Diameter Diameter of the manual handwheel. Larger on higher pressure classes for mechanical advantage. **Tip:** When reviewing a gate valve drawing, always verify that the face-to-face length (L) matches your piping layout, and confirm the flange class matches your system pressure rating. Download dimension drawings from Xintai Valves or [contact our engineering team for custom CAD files](https://www.xintaivalves.com/wp-content/uploads/wp-mfa-exports/page/contact.md). Selection Guide ## How to Choose the Correct Gate Valve Dimensions Selecting a gate valve involves more than just size—you must consider pressure class, material, and actuation. Follow these steps to use this dimension guide effectively and specify the right valve for your application: ① ##### Confirm NPS / DN Size Match the valve NPS or DN to the pipe specified in your P&ID or piping layout drawing. Oversizing increases cost and weight; undersizing causes flow restriction. ② ##### Determine Pressure Class Reference the ASME B16.34 pressure-temperature rating chart and select the class matching your system operating conditions. Different classes have dramatically different flange sizes and weights. ③ ##### Plan Installation Space Gate valves require vertical clearance for the fully open gate, stem, handwheel or actuator. Use the H dimension to design adequate clearances around equipment and platforms. ④ ##### Select Actuation Type Small sizes can use handwheel operation; larger sizes or frequent operation require gear drive. Class 600/900 typically mandate gear actuation. ⑤ ##### Choose Material Grade Standard applications use A216 WCB (cast steel); low-temperature service use A352 LCC; corrosive service use Stainless Steel 304/316L. ⑥ ##### Obtain Engineering Drawings After finalizing selection, request complete dimension drawings, 3D CAD models, and weight data from the manufacturer for detailed design and procurement. Frequently Asked Questions ## Gate Valve Dimensions FAQ #### What is the main difference between Class 150 and Class 300? Class 300 features significantly larger flange diameters (D), thicker walls, and heavier construction. Class 300 can operate at roughly 3× the pressure of Class 150. Review the dimension tables to see the specific size differences—they are dramatic. #### Can I install a Class 300 valve in a Class 150 system? Physically yes, but it’s wasteful. While a Class 300 will install in a Class 150 system, you’ll incur unnecessary cost and weight. All system components should use consistent pressure ratings for safety and economy. #### Why is face-to-face length (L) critical in CAD design? Face-to-face length determines the axial space occupied by the valve in the piping. Accurate L values are essential in 3D pipe routing and interference checking to ensure the valve clears adjacent equipment, supports, and structures. #### Must Class 600 and Class 900 use gear drive? Strongly recommended. While small Class 600 valves might theoretically use handwheel operation, the required torque becomes excessive. Class 900 must be gear-driven. Handwheel operation risks equipment damage and personnel injury—always comply with pressure equipment safety standards. #### What does “/” mean in the dimension tables? “/” indicates data not applicable or requiring special confirmation. Weight data, for example, varies by material, gate type, and special configurations. Always request manufacturer weight certificates for critical applications. #### Where can I get Class 1500 / 2500 dimension data? Xintai Valves manufactures API 600 gate valves in all classes from 150 to 2500. For Class 1500/2500 dimension tables, technical datasheets, and CAD drawings, [contact our engineering team](https://www.xintaivalves.com/wp-content/uploads/wp-mfa-exports/page/contact.md) with your application details. [Learn About Our Company](https://www.xintaivalves.com/wp-content/uploads/wp-mfa-exports/page/company-profile.md) ## Need Custom Gate Valve Dimensions & Specs? Xintai Valves manufactures API 600–compliant gate valves in Class 150–2500 with non-standard NPS/DN sizes, special pressure ratings and materials, and custom CAD/3D drawings and dimension datasheets. [Request a Quote](https://www.xintaivalves.com/wp-content/uploads/wp-mfa-exports/page/contact.md) [Browse Products](https://www.xintaivalves.com/wp-content/uploads/wp-mfa-exports/taxonomy/product/gate-valve.md#pmain)